Bicycle riding stress parameter acquisition device

Abstract

The invention relates to the technical field of bicycles, and discloses a bicycle riding stress parameter acquisition device, which comprises a transmission structure, a plurality of coupling structures, a plurality of hydraulic telescopic structures, a bicycle body and a limiting frame, and is characterized in that the transmission structure comprises a transmission belt, a plurality of fixed rollers and a plurality of variable rollers, the variable roller is used for keeping the basic framework of the transmission structure stable, is arranged in the middle of the transmission belt, and simulates straight movement and turning of a road through horizontal arrangement and inclination; according to the transmission structure, through cooperative arrangement of the fixed roller and the variable roller, the stability of the structure can be kept, a stable transmission force and a stable supporting face are provided for a bicycle body, slipping and deviation during riding are avoided, the stability of stress parameter collection is ensured, and the stability of stress parameter collection can be improved through horizontal and inclined switching of the variable roller. The straight-going and turning working conditions of a real road are accurately simulated, and the problems that an existing collecting device cannot simulate complex road conditions, and the deviation between collected data and real riding is large are solved.

Description

Technical Field

[0001] This invention relates to the field of bicycle technology, and more particularly to a device for collecting force parameters during bicycle riding. Background Technology

[0002] Indoor bicycle riding data collection devices often employ fixed rollers, magnetic resistance, or electromagnetic damping structures to fix the bicycle in place and collect force data. While such devices can avoid interference from the outdoor environment, they have many insurmountable technical defects that seriously affect the authenticity and comprehensiveness of the force data collection.

[0003] The shortcomings of existing indoor cycling force parameter acquisition devices are as follows: First, their working condition simulation capabilities are weak. Most devices can only simulate a single straight-line working condition and use a fixed transmission structure, which cannot simulate the turning conditions of real roads. During the turning process, the rider's force posture and the force state of the bicycle body are significantly different from those in the straight-line working condition. The lack of force acquisition under the turning condition means that the collected data cannot fully reflect the force characteristics of real cycling. Second, the limiting mechanism of existing devices is mostly rigid and fixed, which restricts the left and right sway of the bicycle body. This does not match the posture of the bicycle body during real cycling and is prone to introducing additional force interference, resulting in distortion of the collected force parameters. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing indoor cycling force parameter acquisition devices, such as the inability to simulate curves and the inconsistency between the left and right sway of the bicycle and the actual posture of the bicycle during riding. Therefore, this invention proposes a bicycle cycling force parameter acquisition device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bicycle riding force parameter acquisition device includes: a transmission structure, multiple coupling structures, multiple hydraulic telescopic structures, a bicycle frame, and a limit frame;

[0007] The transmission structure includes a transmission belt, multiple fixed rollers, and multiple variable rollers. The fixed rollers and variable rollers are evenly spaced inside the transmission belt. The fixed rollers are located at both ends of the transmission belt to maintain the stability of the basic structure of the transmission and facilitate the provision of stable power transmission. The variable rollers are located in the middle of the transmission belt and, by being placed horizontally or tilted, simulate straight-line and turning motions on a road.

[0008] The coupling structure includes two connected universal couplings, which are located at both ends of the moving roller.

[0009] The hydraulic telescopic structure includes two connected hydraulic telescopic rods, which extend and retract in the horizontal and vertical directions respectively. The hydraulic telescopic structure can drive the variable roller to tilt through the coupling structure.

[0010] The limiting frame includes a fixed frame, two fixed hinge rods and two telescopic hinge rods. It restricts the forward and backward movement of the bicycle body while allowing the bicycle body to sway left and right through the fixed hinge rods and telescopic hinge rods.

[0011] As a further embodiment of the present invention, the bicycle body includes a frame, a seat, handlebars, a front wheel, a rear wheel, a pedal wheel, and multiple sensing modules, which are used to detect the torques on the seat, the front wheel, the rear wheel, and the pedal wheel, respectively.

[0012] As a further aspect of the present invention, multiple sensing modules for detecting the torque on the pedal wheel are respectively installed on the central shaft, crank and pedal of the pedal wheel, which facilitates all-round detection of the pedal wheel and comparison of the differences in torque on both sides of the pedal wheel.

[0013] As a further embodiment of the present invention, mounting plates are provided at the front and rear ends of the frame for mounting telescopic hinge rods, with the two telescopic hinge rods corresponding to the vertical axis positions of the front wheel and the rear wheel, respectively.

[0014] As a further embodiment of the present invention, the limiting frame is hinged to the fixed hinge rod, the fixed hinge rod is hinged to the telescopic hinge rod, and the hinge directions of the telescopic hinge rod and the fixed hinge rod are both perpendicular to the bicycle's travel direction and the transmission direction of the transmission structure.

[0015] As a further embodiment of the present invention, the transmission belt is provided with a plurality of alternating tension strips, the tension strips having tension seams along the transmission direction of the transmission belt, and being fixedly connected to the transmission belt in the direction perpendicular to the transmission direction of the transmission belt.

[0016] As a further embodiment of the present invention, the transmission structure also includes a transmission frame and a drive motor. The transmission frame is provided with a vertical groove to facilitate the tilting of the variable roller. The output end of the drive motor is fixedly connected to the fixed roller, and the transmission structure is driven to move through the fixed roller.

[0017] As a further embodiment of the present invention, the horizontally extending hydraulic telescopic rod is rotatably connected to the corresponding universal coupling to compensate for the relative displacement when the variable roller is tilted, and the vertically extending hydraulic telescopic rod is set at the bottom end of the horizontally extending hydraulic telescopic rod, which drives the variable roller to tilt through its own extension and retraction.

[0018] As a further aspect of the present invention, the transmission structure simulates a road turning process, in which multiple vertically extending and retracting hydraulic telescopic rods extend and retract smoothly in a regular manner, causing one side of the transmission belt to rise smoothly.

[0019] As a further embodiment of the present invention, the length of the transmission belt covered by the arrangement of multiple variable rollers is greater than the length of the transmission belt covered by the bicycle body.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The transmission structure of this application, through the coordinated setting of fixed rollers and variable rollers, can maintain the stability of its own structure, provide stable power transmission and support surface for the bicycle body, avoid slipping and deviation during riding, and ensure the stability of force parameter acquisition. At the same time, by switching between the horizontal and tilted positions of the variable rollers, it can accurately simulate the straight and turning conditions of real roads, solving the problem that existing acquisition devices cannot simulate complex road conditions and the acquired data deviates greatly from the actual riding conditions.

[0022] The structural design of the limit frame in this application takes into account both limitation and flexibility. It effectively restricts the forward and backward movement of the bicycle body to avoid the bicycle body deviation during riding affecting the data collection accuracy, while allowing the bicycle body to sway left and right to conform to the real riding posture, reducing the interference of the limit structure on the riding force, and ensuring that the collected force parameters are more in line with the actual riding scenario. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a bicycle riding force parameter acquisition device proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the transmission structure of a bicycle riding force parameter acquisition device proposed in this invention;

[0025] Figure 3 This invention proposes a device for acquiring force parameters during bicycle riding. Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic diagram of a tension bar for a bicycle riding force parameter acquisition device proposed in this invention;

[0027] Figure 5 This is a schematic diagram of a bicycle frame for a bicycle riding force parameter acquisition device proposed in this invention;

[0028] Figure 6 This invention proposes a device for acquiring force parameters during bicycle riding. Figure 5 Enlarged view of point B in the middle;

[0029] Figure 7 This is a schematic diagram of the limit frame of a bicycle riding force parameter acquisition device proposed in this invention.

[0030] In the diagram: 100, transmission structure; 110, transmission belt; 111, tension bar; 120, fixed roller; 130, variable roller; 140, transmission frame; 141, vertical slide rail; 150, drive motor; 200, coupling structure; 210, universal coupling; 300, hydraulic telescopic structure; 310, hydraulic telescopic rod; 400, bicycle body; 410, frame; 420, seat; 430, handlebars; 440, front wheel; 450, rear wheel; 460, pedal wheel; 461, bottom bracket; 462, crank; 463, pedals; 470, mounting plate; 500, limit bracket; 510, fixed bracket; 520, fixed hinge rod; 530, telescopic hinge rod. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 As shown, a bicycle riding force parameter acquisition device includes: a transmission structure 100, multiple coupling structures 200, multiple hydraulic telescopic structures 300, a bicycle body 400, and a limit frame 500.

[0033] The transmission structure 100 includes a transmission belt 110, multiple fixed rollers 120, and multiple variable rollers 130. The fixed rollers 120 and variable rollers 130 are arranged parallel to each other at equal intervals inside the transmission belt 110. The transmission belt 110 is sleeved on the outside of all the fixed rollers 120 and variable rollers 130, forming a closed transmission circuit. The fixed rollers 120 are fixedly installed at both ends of the transmission frame 140, with their axes perpendicular to the transmission frame 140 and their positions fixed. This is used to maintain the basic structural stability of the transmission structure 100, providing a stable support surface and power transmission for the rear wheel 450 of the bicycle frame 400, ensuring the stability of the bicycle frame 400. When the vehicle body 400 is ridden, there is no slippage or deviation between the rear wheel 450 and the transmission belt 110. The variable rollers 130 are evenly arranged in the middle of the transmission belt 110, located between the fixed rollers 120. The variable rollers 130 can rotate freely around their own axis and can simulate the straight-going and turning conditions of real roads by switching between a flat state and an inclined state. When all the variable rollers 130 are flat, the surface of the transmission belt 110 remains horizontal, simulating straight-going on the road; when some of the variable rollers 130 are tilted, the transmission belt 110 tilts synchronously with the variable rollers 130, simulating the road surface tilt angle when turning.

[0034] The coupling structure 200 includes two universal couplings 210 that are hinged to each other. Each end of the variable roller 130 is equipped with a coupling structure 200. One end of the universal coupling 210 is fixedly connected to the end of the variable roller 130, and the other end is movably connected to the hydraulic telescopic structure 300 to ensure that the variable roller 130 can achieve multi-angle rotation compensation when tilted.

[0035] The hydraulic telescopic structure 300 includes two interconnected hydraulic telescopic rods 310, which extend and retract in a straight and vertical direction, respectively. The top end of the hydraulic telescopic structure 300 is connected to the end of the variable roller 130 via a coupling structure 200. By controlling the extension and retraction of the two hydraulic telescopic rods 310, the coupling structure 200 can be driven to shift at an angle, thereby driving the variable roller 130 to switch between a flat and tilted state, and the tilt angle of the variable roller 130 can be precisely adjusted.

[0036] The limiting frame 500 includes a fixed frame 510, two fixed hinge rods 520, and two telescopic hinge rods 530. The fixed frame 510 is fixedly installed on the ground or a foundation platform. One end of each of the two fixed hinge rods 520 is hinged to both sides of the fixed frame 510, and the other end is hinged to one end of each of the two telescopic hinge rods 530. The other end of each telescopic hinge rod 530 is hinged to the frame 410 of the bicycle body 400. Through the synergistic effect of the fixed hinge rods 520 and the telescopic hinge rods 530, the limiting frame 500 effectively restricts the forward and backward movement of the bicycle body 400 and prevents the bicycle body 400 from shifting forward and backward during riding, while allowing the bicycle body 400 to sway left and right with the tilt of the drive belt 110, conforming to the actual posture of the bicycle body during riding.

[0037] The transmission structure 100 of this application, through the coordinated arrangement of fixed roller 120 and variable roller 130, can maintain its own structural stability, provide stable power transmission and support surface for bicycle body 400, avoid slippage and deviation during riding, and ensure the stability of force parameter acquisition. It can also accurately simulate the straight and turning conditions of real roads by switching between flat and tilted position of variable roller 130, solving the problem that existing acquisition devices cannot simulate complex road conditions and the acquired data deviates greatly from the actual riding conditions.

[0038] The coupling structure 200 adopts a universal coupling 210, which can flexibly compensate for the angular offset and relative displacement generated when the variable roller 130 tilts, avoid jamming and stress damage between the hydraulic telescopic structure 300 and the variable roller 130, ensure smooth tilting of the variable roller 130, and improve the structural reliability and service life of the device.

[0039] The hydraulic telescopic structure 300 uses two hydraulic telescopic rods 310 in the straight and vertical directions to work together, which can precisely control the tilt angle and tilt speed of the variable roller 130, realize the smooth simulation of turning conditions, and the hydraulic drive method has strong stability and uniform force, which can adapt to the turning simulation requirements of different amplitudes.

[0040] The structural design of the limit frame 500 balances limitation and flexibility. It effectively restricts the forward and backward movement of the bicycle body 400 to avoid the bicycle body deviation during riding affecting the data collection accuracy, while allowing the bicycle body 400 to sway left and right to conform to the real riding posture. This reduces the interference of the limit structure on the riding force and ensures that the collected force parameters are more consistent with the actual riding scenario.

[0041] like Figure 5 and Figure 6 As shown, the bicycle body 400 includes a frame 410, a seat 420, handlebars 430, a front wheel 440, a rear wheel 450, pedal wheels 460, and multiple sensor modules. The frame 410 is the main support structure of the bicycle body 400. The seat 420, handlebars 430, front wheel 440, rear wheel 450, and pedal wheels 460 are all mounted on the frame 410. The rear wheel 450 is in close contact with the drive belt 110 of the transmission structure 100. When riding, the pedal wheel 460 drives the rear wheel 450 to rotate, which in turn drives the drive belt 110 to move synchronously. The multiple sensor modules all use high-precision torque sensing units and are fixedly mounted on the seat 420, front wheel 440, rear wheel 450, and pedal wheels 460, respectively. The sensor at the seat 420... The sensor module is fitted to the connection between the bottom of the seat 420 and the frame 410 to detect the pressure torque applied by the human body to the seat 420 during riding. The sensor module at the front wheel 440 is installed at the axle end of the front wheel 440 to detect the radial torque and lateral torque experienced by the front wheel 440 during rotation. The sensor module at the rear wheel 450 is installed at the axle end of the rear wheel 450 to detect the transmission torque and impact torque experienced by the rear wheel 450 when it contacts the drive belt 110. The sensor module at the pedal wheel 460 is installed at the key force-bearing part of the pedal wheel 460 to detect the pedaling torque experienced by the pedal wheel 460 during rotation. Each sensor module is electrically connected to the data acquisition terminal, which can transmit the detected torque signals to the terminal for processing in real time.

[0042] like Figure 6As shown, multiple sensing modules for detecting the torque on the pedal wheel 460 are respectively installed on the central axle 461, crank 462, and pedal 463 of the pedal wheel 460. The sensing module at the central axle 461 is sleeved and installed on the outside of the central axle 461, and is tightly fitted to the central axle 461, for detecting the total transmission torque when the central axle 461 rotates. The sensing modules at the crank 462 are respectively fitted and installed in the middle of the left and right cranks 462, symmetrically arranged, for detecting the torque on the left and right cranks respectively. The pedaling torque on the crank 462 is detected by the sensor module embedded in the bottom of the left and right pedals 463. The sensor module is used to detect the human pedaling pressure torque on the left and right pedals 463 respectively. The sensor modules work synchronously to facilitate the all-round detection of the overall force on the pedal wheel 460. At the same time, it can collect the specific data of the torque on both sides of the pedal wheel 460 (including the left and right cranks 462 and left and right pedals 463) and then compare the difference of the torque on both sides of the pedal wheel 460.

[0043] In this embodiment, the sensing modules are arranged in layers at the central axle 461, crank 462, and pedal 463 of the pedal wheel 460, enabling comprehensive and multi-dimensional detection of the force on the pedal wheel 460. This covers the key force-bearing parts of the pedal wheel 460, solving the problem of incomplete force detection and inability to capture local force differences in existing devices. Sensing modules are respectively set at the left and right cranks 462 and the left and right pedals 463, which can accurately collect torque data on both sides of the pedal wheel 460. The magnitude and trend of torque on both sides can be directly compared, clearly reflecting the difference in force exertion between the rider's left and right legs. This provides accurate data support for optimizing riding posture and biomechanical analysis. The sensing module at the central axle 461 detects the total transmission torque, while the sensing modules at the cranks 462 and pedals 463 detect local pedaling torque. The data from these three sources complement and verify each other, improving the accuracy and reliability of torque acquisition from the pedal wheel 460 and avoiding deviations caused by detection of a single part.

[0044] like Figure 1 and Figure 5 As shown, a mounting plate 470 is fixedly installed at the front and rear ends of the frame 410. The mounting plate 470 is made of high-strength metal and is used to install telescopic hinge rods 530. The two telescopic hinge rods 530 correspond to the vertical axis positions of the front wheel 440 and the rear wheel 450, respectively. That is, the hinge axis of the telescopic hinge rod 530 coincides with the vertical line of the axis of the front wheel 440 and the rear wheel 450, ensuring that the limiting force of the telescopic hinge rod 530 on the bicycle body 400 is evenly applied to the axis of the front and rear wheels 450, avoiding uneven load during limiting.

[0045] like Figure 1 and Figure 7As shown, the fixed frame 510 of the limit frame 500 is hinged to one end of two fixed hinge rods 520, and the other end of the fixed hinge rod 520 is hinged to one end of the corresponding telescopic hinge rod 530, forming a movable hinge structure. The hinge direction of the fixed hinge rod 520 and the telescopic hinge rod 530 is perpendicular to the bicycle's travel direction and the transmission direction of the transmission structure 100. That is, the axis of the hinge shaft is perpendicular to the bicycle's travel direction when it is traveling straight, and also perpendicular to the transmission direction of the transmission belt 110 in a horizontal state. Wear-resistant bushings are provided at the hinge to reduce frictional loss when the hinge rotates, ensure the flexible rotation of the hinge structure, and prevent loosening or jamming after long-term use.

[0046] In this embodiment, the hinge direction of the fixed hinge rod 520 and the telescopic hinge rod 530 is reasonable, both being perpendicular to the bicycle's travel direction and the transmission direction of the transmission structure 100. This can accurately limit the forward and backward movement of the bicycle body 400, preventing the bicycle body 400 from deviating along the travel direction during riding, while not restricting the left and right swaying of the bicycle body 400, thus conforming to the actual posture of the bicycle body during riding.

[0047] like Figure 4 As shown, multiple alternating tension strips 111 are evenly arranged on the transmission belt 110. The tension strips 111 are made of a highly elastic, high-strength, and wear-resistant material that is compatible with the material of the transmission belt 110 and can deform synchronously with the transmission belt 110. The tension strips 111 extend along the transmission direction of the transmission belt 110, and multiple evenly distributed tension slits are opened on the tension strips 111 along their own length direction. The tension slits penetrate the upper and lower surfaces of the tension strips 111 to accommodate the tensile deformation of the transmission belt 110. The tension strips 111 are fixedly connected to the transmission belt 110 in the direction perpendicular to the transmission direction of the transmission belt 110 (i.e., the width direction of the transmission belt 110) to ensure that the tension strips 111 and the transmission belt 110 are firmly connected and do not slip relative to each other.

[0048] In this embodiment, the tension seams on the tension strip 111 can effectively adapt to the tensile deformation of the transmission belt 110 when the variable roller 130 is tilted, preventing the transmission belt 110 from cracking or being damaged due to excessive deformation. At the same time, it reduces the deformation stress of the transmission belt 110, ensuring that the transmission belt 110 is always in close contact with the fixed roller 120 and the variable roller 130, preventing slippage and improving transmission stability. Meanwhile, the uniform distribution of the tension seams makes the deformation of the transmission belt 110 more uniform, and the surface tilt of the transmission belt 110 is smoother when the variable roller 130 is tilted, further improving the realism of the turning condition simulation and ensuring that the collected force parameters are more in line with the real riding scenario.

[0049] like Figure 2 and Figure 3As shown, the transmission structure 100 also includes a transmission frame 140 and a drive motor 150. The transmission frame 140 adopts a high-strength frame structure and is fixedly installed on the ground or foundation platform to support the fixed roller 120, the movable roller 130, the hydraulic telescopic structure 300, and the coupling structure 200. Vertical grooves 141 are respectively provided on both sides of the transmission frame 140 corresponding to the two ends of the movable roller 130. The vertical grooves 141 extend in the vertical direction. The two ends of the movable roller 130 are slidably connected to the vertical grooves 141 by sliders. The sliders can slide along the vertical grooves 141. 1. The vertical sliding mechanism facilitates the tilting action of the variable roller 130 under the drive of the hydraulic telescopic structure 300, while providing stable support for the variable roller 130. The drive motor 150 is fixedly installed on one side of the transmission frame 140, and the output end of the drive motor 150 is fixedly connected to the end of one of the fixed rollers 120. The drive motor 150 drives the fixed roller 120 to rotate, thereby driving the transmission belt 110 to move synchronously, realizing the active transmission of the transmission structure 100. The speed of the drive motor 150 is adjustable to adapt to different riding speed requirements.

[0050] In this embodiment, the vertical chute 141 provides precise guidance for the tilting action of the variable roller 130, enabling the variable roller 130 to slide smoothly and tilt smoothly along the chute under the drive of the hydraulic telescopic structure 300, avoiding deviation or jamming when the variable roller 130 tilts, and ensuring the smoothness and reliability of the turning condition simulation.

[0051] like Figure 3 As shown, in the hydraulic telescopic structure 300, the top end of the hydraulic telescopic rod 310 (hereinafter referred to as the straight telescopic rod) that extends and retracts in the straight direction is rotatably connected to one end of the corresponding universal coupling 210 through a rotating joint. The rotating joint can rotate 360 ​​degrees flexibly to compensate for the relative displacement in the horizontal and vertical directions when the variable roller 130 is tilted, and to avoid force jamming and structural damage between the straight telescopic rod and the universal coupling 210. The top end of the hydraulic telescopic rod 310 (hereinafter referred to as the vertical telescopic rod) that extends and retracts in the vertical direction is fixedly connected to the bottom end of the straight telescopic rod. The bottom end of the vertical telescopic rod is fixedly installed on the transmission frame 140. Through its own telescopic movement, it drives the straight telescopic rod to rise and fall synchronously, and then drives the variable roller 130 to tilt along the vertical slide groove 141 through the coupling structure 200. Moreover, the telescopic amount of the vertical telescopic rod can be precisely controlled to achieve precise adjustment of the tilt angle of the variable roller 130.

[0052] When the transmission structure 100 simulates a road turning condition, multiple vertically extending hydraulic telescopic rods 310 smoothly extend and retract according to a preset pattern. Specifically, depending on the direction of the simulated turn (left or right), the vertical telescopic rod on the inner side of the turn gradually retracts, causing the corresponding side's variable roller 130 to tilt downwards, while the vertical telescopic rod on the outer side of the turn gradually extends, causing the corresponding side's variable roller 130 to tilt upwards. The extension and retraction speeds of all vertical telescopic rods remain synchronized and uniform, ensuring that one side of the transmission belt 110 can smoothly lift up, forming an inclination angle consistent with that of a real road turn. The lifting process is smooth and without jamming, preventing wrinkles or deviations in the transmission belt 110, and ensuring that the bicycle body 400 can be ridden smoothly during the turn simulation.

[0053] like Figure 1 As shown, the support length formed by the uniform arrangement of multiple variable rollers 130, that is, the length of the transmission belt 110 covered by the arrangement of variable rollers 130, is greater than the length of the transmission belt 110 covered by the bicycle body 400. Specifically, the total length of the arrangement of variable rollers 130 exceeds the distance between the front and rear wheels 450 of the bicycle body 400, ensuring that the front wheel 440 and the rear wheel 450 can always be in close contact with the transmission belt 110 section with variable rollers 130 under different working conditions such as straight-line and turning, and that the front and rear wheels 450 will not leave the support range of variable rollers 130 no matter how the bicycle body 400 sways left and right.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for acquiring force parameters during bicycle riding, characterized in that, include: Transmission structure (100), multiple coupling structures (200), multiple hydraulic telescopic structures (300), bicycle body (400) and limit frame (500). The transmission structure (100) includes a transmission belt (110), multiple fixed rollers (120) and multiple variable rollers (130). The fixed rollers (120) and variable rollers (130) are evenly spaced inside the transmission belt (110). The fixed rollers (120) are located at both ends of the transmission belt (110) to maintain the stability of the basic structure of the transmission structure (100) and facilitate the provision of stable power transmission. The variable rollers (130) are located in the middle of the transmission belt (110) and simulate straight and turning roads by being placed horizontally and tilted. A coupling structure (200) comprising two connected universal couplings (210) disposed at both ends of a variable roller (130); The hydraulic telescopic structure (300) includes two connected hydraulic telescopic rods (310), which extend and retract in the straight and vertical directions respectively. The hydraulic telescopic structure (300) can drive the variable roller (130) to tilt through the coupling structure (200). The limiting frame (500) includes a fixed frame (510), two fixed hinge rods (520) and two telescopic hinge rods (530), which restrict the forward and backward movement of the bicycle body (400) while allowing the bicycle body (400) to sway left and right through the fixed hinge rods (520) and the telescopic hinge rods (530).

2. The bicycle riding force parameter acquisition device according to claim 1, characterized in that, The bicycle body (400) includes a frame (410), a seat (420), a handlebar (430), a front wheel (440), a rear wheel (450), a pedal wheel (460), and multiple sensing modules, which are used to detect the torques on the seat (420), the front wheel (440), the rear wheel (450), and the pedal wheel (460).

3. The bicycle riding force parameter acquisition device according to claim 2, characterized in that, Multiple sensing modules for detecting the torque on the pedal wheel (460) are respectively set on the central shaft (461), crank (462) and pedal (463) of the pedal wheel (460), which facilitates the all-round detection of the pedal wheel (460) and the comparison of the different torques on both sides of the pedal wheel (460).

4. The bicycle riding force parameter acquisition device according to claim 2, characterized in that, The front and rear ends of the frame (410) are respectively provided with mounting plates (470) for mounting telescopic hinge rods (530), and the two telescopic hinge rods (530) correspond to the vertical axis positions of the front wheel (440) and the rear wheel (450) respectively.

5. The bicycle riding force parameter acquisition device according to claim 1, characterized in that, The limiting frame (500) is hinged to the fixed hinge rod (520), and the fixed hinge rod (520) is hinged to the telescopic hinge rod (530). The hinge directions of the telescopic hinge rod (530) and the fixed hinge rod (520) are perpendicular to the bicycle travel direction and the transmission direction of the transmission structure (100).

6. The bicycle riding force parameter acquisition device according to claim 1, characterized in that, The transmission belt (110) is provided with a plurality of alternating tension strips (111), and the tension strips (111) are provided with tension seams along the transmission direction of the transmission belt (110), and are fixedly connected to the transmission belt (110) in the direction perpendicular to the transmission direction of the transmission belt (110).

7. The bicycle riding force parameter acquisition device according to claim 1, characterized in that, The transmission structure (100) also includes a transmission frame (140) and a drive motor (150). The transmission frame (140) is provided with a vertical groove (141) to facilitate the tilting of the variable roller (130). The output end of the drive motor (150) is fixedly connected to the fixed roller (120) and drives the transmission structure (100) to move through the fixed roller (120).

8. The bicycle riding force parameter acquisition device according to claim 1, characterized in that, The horizontally extending hydraulic telescopic rod (310) is rotatably connected to the corresponding universal coupling (210) to compensate for the relative displacement when the variable roller (130) is tilted. The vertically extending hydraulic telescopic rod (310) is set at the bottom end of the horizontally extending hydraulic telescopic rod (310) and drives the variable roller (130) to tilt through its own extension and retraction.

9. A bicycle riding force parameter acquisition device according to claim 1, characterized in that, When the transmission structure (100) simulates a road turning, the multiple vertically extending and retracting hydraulic telescopic rods (310) extend and retract smoothly in a regular manner, causing one side of the transmission belt (110) to lift smoothly.

10. A bicycle riding force parameter acquisition device according to claim 1, characterized in that, The length of the multiple variable rollers (130) arranged to cover the drive belt (110) is greater than the length of the bicycle body (400) covering the drive belt (110).

Images